External vision system and / or aiming and firing weapon for military land vehicles, military aircraft and naval military units

摘要

An electronic control unit (12) for a system external vision and / or aiming and firing weapon (1) of land and / military vehicle or military aircraft and / or naval military unit, wherein said vision system external and / or aiming and firing weapon (1) includes: a video capture device (11) configured to capture a video stream of a scene out of the ground military vehicle or military aircraft or naval military unit, said video stream a sequence of color images (2), where the color of the pixels of the images (2) is expressed in a predefined color space RGB components in terms of red, green and blue; and * a user interface (13); wherein said electronic control unit (12) is: * designed to connect to the video capture device (11) to acquire the video stream captured by the latter; * Configured to insert an aiming reticle (21) images (2) of the video stream acquired indicating the aim of the video capture device (11) and / or gun installed on board the ground military vehicle or military aircraft naval or military unit, thereby generating a corresponding output video stream; and * designed to connect to the user interface (13) to give the latter the output video stream; wherein said user interface (13) is configured to display the received video stream output from the electronic control unit (12); characterized said electronic control unit (12) being programmed for: * Automatically change the color of aiming reticle (21) performing the following operations: - transform with respect to an image (2) of the video stream acquired from the capture device video (11), the color components red, green and blue pixels located in a predefined region (22) of said image (2) components L *, a * and b * expressed in the color space opponent CIE L * a * b *, wherein said predefined region (22) is centered on the aiming reticle (21), - calculating average values ​​of L * components, a * and b * of the pixels in the predefined region (22), - calculate a value of color saturation and hue angle based on the average values ​​of the components a * and b * of the pixels in the predefined region (22), and - selecting the color of the aiming reticle (21) based on the value color saturation calculated, the calculated hue angle do and mean values ​​of L * components of the pixels in the predefined region (22), in order to maximize the color contrast between said aiming reticle (21) and the predefined region (22); * Calculating a value indicative of a color difference between the predefined regions (22) of two or more immediately consecutive images (2) in the flow acquired video capture device video (11) based on the average values ​​of the components L *, a * and b * of the pixels in said predefined regions (22); and * change the color of aiming reticle (21) only if the value indicative of said color difference is equal to or greater than a predefined threshold.